Global Patent Index - EP 4342867 A1

EP 4342867 A1 20240327 - METHODS FOR THE CONTROL OF SHRINKAGE OF CEMENTITIOUS COMPOSITIONS AND CEMENTITIOUS GROUTS HAVING CONTROLLED SHRINKAGE

Title (en)

METHODS FOR THE CONTROL OF SHRINKAGE OF CEMENTITIOUS COMPOSITIONS AND CEMENTITIOUS GROUTS HAVING CONTROLLED SHRINKAGE

Title (de)

VERFAHREN ZUR STEUERUNG DES SCHRUMPFENS VON ZEMENTZUSAMMENSETZUNGEN UND ZEMENTMÖRTEL MIT KONTROLLIERTEM SCHRUMPFEN

Title (fr)

PROCÉDÉS DE RÉGULATION DU RETRAIT DE COMPOSITIONS CIMENTAIRES ET COULIS CIMENTAIRES PRÉSENTANT UN RETRAIT CONTRÔLÉ

Publication

EP 4342867 A1 20240327 (EN)

Application

EP 22382878 A 20220926

Priority

EP 22382878 A 20220926

Abstract (en)

A method for the control of the shrinkage of cementitious materials, said method comprising the steps of (i) providing a cementitious material, (ii) adding aluminium powder to said cementitious material, (iii) adding calcium oxide or magnesium oxide to said cementitious material, and (iv) adding a shrinkage reducing agent which is an organic molecule to said cementitious material. Cementitious grouts comprising aluminium powder, calcium oxide or magnesium oxide, and a shrinkage reducing agent which is an organic molecule

IPC 8 full level

C04B 28/04 (2006.01); C04B 22/04 (2006.01); C04B 22/06 (2006.01); C04B 28/08 (2006.01); C04B 40/00 (2006.01)

CPC (source: EP)

C04B 28/04 (2013.01); C04B 28/08 (2013.01); C04B 40/0039 (2013.01); C04B 2111/34 (2013.01); C04B 2111/70 (2013.01); C04B 2201/20 (2013.01)

C-Set (source: EP)

  1. C04B 28/04 + C04B 14/062 + C04B 18/141 + C04B 18/146 + C04B 20/008 + C04B 22/04 + C04B 22/064 + C04B 38/02 + C04B 40/0028 + C04B 2103/58
  2. C04B 28/04 + C04B 14/062 + C04B 18/141 + C04B 18/146 + C04B 20/008 + C04B 22/04 + C04B 22/066 + C04B 24/32 + C04B 38/02 + C04B 40/0028
  3. C04B 40/0039 + C04B 22/04 + C04B 22/064 + C04B 24/32
  4. C04B 28/08 + C04B 7/02 + C04B 14/062 + C04B 18/146 + C04B 22/008 + C04B 22/04 + C04B 24/02 + C04B 38/02 + C04B 40/0028

Citation (applicant)

  • WO 2016185264 A1 20161124 - HOLCIM TECHNOLOGY LTD [CH]
  • J. KUZIAK ET AL.: "Influence of the Type of Cement on the Action of the Admixture Containing Aluminium Powder", MATERIALS, vol. 14, 2021, pages 2927

Citation (search report)

  • [Y] US 2020407276 A1 20201231 - SAMPSON PAUL [US]
  • [Y] US 2017008810 A1 20170112 - RADEMAN JERRY E [US], et al
  • [Y] WO 2016189373 A1 20161201 - HOLCIM TECHNOLOGY LTD [CH]
  • [IAY] YANG LIN ET AL: "Utilization of phosphogypsum for the preparation of non-autoclaved aerated concrete", CONSTRUCTION AND BUILDING MATERIALS, ELSEVIER, NETHERLANDS, vol. 44, 19 April 2013 (2013-04-19), pages 600 - 606, XP028535957, ISSN: 0950-0618, DOI: 10.1016/J.CONBUILDMAT.2013.03.070
  • [YA] DATABASE WPI Week 201998, 22 November 2019 Derwent World Patents Index; AN 2019-A0419E, XP002808814
  • [YA] MUTHU KUMAR E. ET AL: "Effect of fineness and dosage of aluminium powder on the properties of moist-cured aerated concrete", CONSTRUCTION AND BUILDING MATERIALS, vol. 95, 25 July 2015 (2015-07-25), Netherlands, pages 486 - 496, XP093030712, ISSN: 0950-0618, DOI: 10.1016/j.conbuildmat.2015.07.122

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4342867 A1 20240327; WO 2024068355 A1 20240404

DOCDB simple family (application)

EP 22382878 A 20220926; EP 2023075747 W 20230919